Stopping Blowback

[Aslan]

Does anyone know what causes blowback, generally, in spyder clone markers? My Rebel LE has a bit of a blowback problem. I was thinking of updating my hopper/feed system...but is there any way to halt blowback?

[spyderpainball]

buy a new bolt that fits the body well. the best IMO are the acp blue bolts. they only come in kingman sizes, but it is solid nytralon and has oring grooves in the front of the bolt for better sealing and imporvied blowback.